Machine for treating rubber and other heavy plastic material



Nav, 25. 1924.

y 1,516,488 F.- H. BANBURY MACHINE FOR TREATING RUBBER AND OTHER HEAVYPLASTIC MATERIAL Fun; Fab. 2s 192g' 2 Shears-Shut' 1 Nw. z5, 1924.',515,48s

F. H. BANBURY MACHINE FOR TREATING RUBBER AND OTHER HEAVY PLASTICMATERIAL Filed Feb. 2s, 1922 -2 shun-nmz 2 Patented Nov. 25,1924.

UNlTED sTATEs PATENT OFFICE.

FEBNLEKH. BANBUBY,OF ANSONIA, CONNECTICUT, ASSICNOR'TO BIRMINGHAM IRONFOUNDRY, 0F DERBY, CONNECTICUT, A CORPORATION.

MACHINE FOB TBEATING RUBBER AND OTHER HEAVY PLASTIC MATERIAL.

. Application med February 2s, 192s. seran No. 538,741.

ToaZZ 'whomz't may concern Be it known that I, FERNLEY H. BANBRY,

a citizen oftheA United States, residing atl Ansonia, in the county ofNew Haven and State of Connecticut, have inventada new and usefulImprovement in Machines for Treatin Rubber and Other Heavy PlasticMateria; and I do hereby declare the following, when taken in connectionwith the accompanying drawin s andthe characters of reference marked tereon, to be a full, clear, and exact description of the same, and

which said drawings constitute part of this application, and represent,1n

v Fi 1 asectional view of a machine for treating rubber and other heavyplastic may terial, showing one form'of my invention.

"Fig. 2, Fig. 3 and Fig. 4 sectional views illustrating modied forms ofcasings.

Fig.' 5 a sectional view illustrating another means for restricting theupward movement of the closure, and means for recording the movement ofthe closure. I

Fig. 6 is a plan view of the recordingdevlce.

This invention relates to improvement in machines for treating rubberand other heavy plastic material, and particularly to devices ofthetype-shown and described in Letters-Patent of the United States, No.1,200,070, dated October 3,1916, and which included a'casing with one ormore rotors located therein, the casing being formed 'with a neck and aclosure located in the said neck and adaptedI to hold the material inposition'to be acted upon by the rotors. In some sizes of machines, itis desirable to limit the upward'movement of the closure, or, in otherwords, to lock it in its operative position, and gne object of thisinvention is to provide means for holdingtheclosurein its operatingposition. Although means are ocking the closure, a certaln amount ofplay is permitted, and it is desirable to record thisplay, or verticalmovement, of the closure and another object of this invention. is toprovide means for re- A cording the movement of the closure, and theinvention consists in the construction as will be hereinafter describedand particularly recited in the claims.

' As shown in Fig. 1 ofthe drawings, I employ a' ca's'ing-10, which, inthis case, is a double cylinder in which rotors 1 1 and 12 are mounted.Thecasing is provided at the double cylinder, I may bottom with asuitable door 13. The casing is also provided witha neck 14, in which islocated a closure 15. As shown in this fig ure, the .closure is providedwith an upwardly-projecting rod 16, extendin into connection'with a.head 17 in a cylinder 18, the head being adapted tobe operatedby ai1` orliquid to raise the closure. To prevent the closure from rising, I mounta latch 19 in the neck 14, with a spring 20 adapted to force the nose 21of the latch into a recess 22, formed for it in one side of the closure.

Instead of having the neck' arran e centrally of the casing, it may bearrang at one side thereof, as shown in Figure 2 of the drawings; and,instead of employing a employ a single cylinder 23, as shown 1n Figure 3of the drawings; and, instead of arran ng the neck ofthe single cylindercentra y over the rotor, it may be at one side thereof, as shown inFigure 4 of the drawings; or, instead of einplo ing a sprin -latch todirectly engage `with t e closure, t e closure may be formed the pointof the pencil, so that the movement of the closure will be recorded onthe sheet 2x8.

I claim:

1. In a machine of the class specified, the

combination with acasing having a char v ing-openingin its top,'of arotor located 1n the said casing below the said opening, a closure forthe said opening, and a latch for holding, with freedom for limitedlocalized movement,` the said closure in position to close the saidopening.

2. In a machine of the class specified, the combination with a casinghaving a charg. ing-opening in its top,l of a rotor located in the saidcasing below the said opening, a movable closure for the said opening,and a recorder for registering the movement of the closure durin theoperation of the rotor.

3. In a mac e of the class specified,'the combination .with a casinghaving a charging-opening 1n lts top, of a rotor located in lhe saidcasing below the said opening, :L

closure for the said opening, means for holding the said closure in itsclosed position, with freedom for limited localized movement therein,and a recorder for reristeringthe said limitedmovcment of the c osureunder the influence of the rotor.

4. In a-lnachine of theclass specified, the combination with a. casinglia-ving a charging-opening in its top, of a rotor located in the said'casing below the said opening, a

closure for the said opening-and a, springlatch for holding, withfreedomfor llmited localized movement,.the said closure in position to closethe said opening.

5. `In a machine of the class specified, the combination with a casinghaving a. charging-opening'in its top, of two rotors located in tle saidcasing below the said opening, a movable closure for the said opening,and a recorder for registeringr the movement of the closure durlng theoperutlon of the rotors. v Y

In testimony whereof, I have signed this specification in the presenceof two sub- 25 scribing witnesses. l

FERNLEY'H. BANBURY. Witnesses:

FREDERIC C. EARLE, MALCOLM P. NICHOLS.

